> Details

Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; Abhayasinghe, D. K.; Abidi, S. H.; AbouZeid, O. S.; Abraham, N. L.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Acharya, B. S.; Adachi, S.; Adam, L.; Adamczyk, L.; Adelman, J.; Adersberger, M.; Adiguzel, A.; Adye, T.; Affolder, A. A.; Afik, Y.; Agheorghiesei, C.; Aguilar-Saavedra, J. A.; [...]

Measurement of the four-lepton invariant mass spectrum in 13 TeV proton-proton collisions with the ATLAS detector

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  • Media type: E-Article
  • Title: Measurement of the four-lepton invariant mass spectrum in 13 TeV proton-proton collisions with the ATLAS detector
  • Contributor: Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; Abhayasinghe, D. K.; Abidi, S. H.; AbouZeid, O. S.; Abraham, N. L.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Acharya, B. S.; Adachi, S.; Adam, L.; Adamczyk, L.; Adelman, J.; Adersberger, M.; Adiguzel, A.; Adye, T.; Affolder, A. A.; Afik, Y.; Agheorghiesei, C.; Aguilar-Saavedra, J. A.; [...]
  • imprint: Springer Science and Business Media LLC, 2019
  • Published in: Journal of High Energy Physics
  • Language: English
  • DOI: 10.1007/jhep04(2019)048
  • ISSN: 1029-8479
  • Origination:
  • Footnote:
  • Description: <jats:title>A<jats:sc>bstract</jats:sc> </jats:title> <jats:p>A measurement of the four-lepton invariant mass spectrum is made with the ATLAS detector, using an integrated luminosity of 36.1 fb<jats:sup>−1</jats:sup> of proton-proton collisions at <jats:inline-formula> <jats:alternatives> <jats:tex-math>$$ \sqrt{s} $$</jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> </jats:alternatives> </jats:inline-formula> = 13 TeV delivered by the Large Hadron Collider. The differential cross-section is measured for events containing two same-flavour opposite-sign lepton pairs. It exhibits a rich structure, with different mass regions dominated in the Standard Model by single <jats:italic>Z</jats:italic> boson production, Higgs boson production, and <jats:italic>Z</jats:italic> boson pair production, and non-negligible interference effects at high invariant masses. The measurement is compared with state-of-the-art Standard Model calculations, which are found to be consistent with the data. These calculations are used to interpret the data in terms of <jats:italic>gg</jats:italic> → <jats:italic>ZZ</jats:italic> → 4<jats:italic>ℓ</jats:italic> and <jats:italic>Z</jats:italic> → 4<jats:italic>ℓ</jats:italic> subprocesses, and to place constraints on a possible contribution from physics beyond the Standard Model. </jats:p>
  • Access State: Open Access